miller



` sheens-sheef 1. G. H. MILLER.

` Hot A11 Furnace..

No. 102,956. Patented .-Maylo; 1870.

Fig: 3.

Patented Mey l0, 1870.

G. H. MILLER.

Het-Air Furnace.

n0 M 5 n m e i fines z z.

duit-religieus @im @titille `encuen n. MILLER.; or LEAVENWORTH, KANSAS.

Letters Paten-t No. 102,956, lla-ted May l0, 41870.

To all whom it may concern:

Be it known that I, GEORGE VH. MILLER, of Leavenworth, in the county of Leavenworth and State of Kansas, have invented a new and valuable Improvement in Furnaces; and I do hereby declare that the following is a full, clear, and exactdescription oi' the construct-ion' and operation ot" the same, reference bef ing had to the annexed drawings making a part of this specication, and to the letters and figures of reference marked thereon. v

Figure 1 of thedrawings is a representation of :i central vertical longitudinal section of my invention.

Figure 2 is a transverse vertical section of the same.

Figure 3 is a detailed view, showing tbe method of attaching the pipes to the wallv of the radiator.

My invention relates to means for heating houses, and consists in certain improvements in the construe# tion and arrangement of the tire-pot, grate, dues, hotair drum, axid"?Teariing-pipes, designed to form a satisf'actory and efficient furnace, easily kept in order, and czttpable of heating and transmitting large quantities o air.

The letter A of the drawings designates the brick foundation, within which is the ash-pit.

" B represents the wall of brick, forming the hot-air chamber, around the furnace.`

C represents the furnace proper, consisting of an external corrugated tapering shell, D, its semi-cylindrical corrugated cap E, the feeding-tube F, and the liningplate or tire-pot G.

The shellMD is arranged with an upward flare, for the purposes of better draught and greater ire-sur face. Itis corrugated, to increase its heating surface, and is-provided with a auch, d, around its upper edge, having a continuouschannel, a, in its upper surface, to correspond to a bead or ridge, c, formed on the under side of the vdanch e of the corrugated cap c. t

The lining-plate G has'a tapering form similar to the shell l). It is arranged within the shell in such a manner that an `air-chamber, H, is formed-between the two.

Air is conducted into this chamber by means of the Perforations n, n. are made around the top of the llining-plate, to permit the air to pass into the fire-pot, and secure the combustion of the gases.

This line or air-chamber H acts, also, as a preservative of the lining-plate.

The fceding-tube F is cast separately from the case or shell of the furnace, and is bolted to the cap E.

'lhe object attained by this arrangement is important, ``and consists in obviating the liability ofthe feeder to f crack. When it is cast in the same piece with the vbows 'a u, to the brick walls B B, on each side.

shell, it will be often at a red heat at its inner end, while the door of the due may be cool.

Through the door of the feeder a pernation,f, is made, to permit the entrance of air.

K represents the grate, composed of the fish-bellied hars l.: k, provided with the pendent arms l ll, pivoted at their lower ends to the connecting-bar g, to the end of which 'is attached the shaker m..

rlhe grate-bars k le are slotted centrally, at i., in snc-h a manner as tokform double bars, connected at the ends,

which are formed into journals, to allow of the free' 'Between the cap and the shell I), sand is employed in the channel a.

From the rear endjof the corrugated cap E depends the smoke-pipe L, extending downward for a distance, and then bending upward, and communicating'with the radiator at its rear engl.

M designates a prismati'c or cylindrical radiator, arranged in position over the furnace, and extending longitudinally through the upper part oi the hot-air chamber P, within the brick walls B.

From the lower portion of the front end of the radintor projects the horizont-al pipe of, provided with a cap, s. The exit-flue t, for the smoke, is joined to the upper side of this pipe. Somewhat higher up, on either side of the pipe r, project similar smaller pipes, c c, provided with caps, and serving for cleaning purposes. The large pipe r, at the base ofthe smoke- Ypipe t, is designed, also, to facilitate the cleaning of' the radiating drum.

The walls of the drum are connected by the diagonal pipes R It, connected, alternately, by the short ly this arrangement, the cold air from without is carried immediately through the heated radiator. External air is also admitted at the base of the Wall B, at a point, N, near the rear end of the chamber. This air is heated by the furnace proper, smoke-pipe, and the external wall of the radiator'. The heated products of combustion pass into the radiator at a point, a', in its base, then rise, and pass forward along the top and downward, creating a` current, which is broken contiuually by the diagonal pipes R R, and eventually finds exit at the point b.

In the construction of my radiator, the pipes It R are joined to the wall thereof', at each end, by means of a double anch, e', as shown at fig. 3. 4

The heads S of the radiator are anched, aud sunk into the ends of the wall, the i'lanches being then bent over the edgesof the wall, and the heads then secured in place by rivets.

The cylinder is usually made in two long sections, IWI M', riveted together by means ofhorlzontal anches, 'w uf, in the manner shown.

Sometimes, in heating small houses, I prefer to use the drum without connecting it to the walls B B. In such cases all the air is admitted at the point N, and passes not only around the radiator, but through the diagonal' pipes R It. 1

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The radiator M, provided with the cleaning-pipes o -v fr, and the internal diagonal ues R R, as specified.

2. In combination with the ycorrugated cap E, provided with aneh e and bead c, the feeding-pipe 11 and corrugated shell D, provided with anch d, and channel a..

3. In combination with the tapering corrugated shell D, the lining-plate G, provided with the perforations n n, and the ues z z, leading to the air-chamber H, between the plate and shell.

In testimony that I claim the above, I have hereunto subscribed my name in the presence of two witnesses.

GEO. H. MILLER.

Witnesses:

- E. W, ANDERSON,

ABNER H. BRYANT. 

